My SIL had her 20-week scan yesterday. There was a certain amount of apprehension about it, as at her 12-week scan a possible problem was picked up with the baby's heart. They had five people in the room with them for this scan, including a cardiologist, and had a tense few minutes as these five professionals said nothing while examining the scan.
Fortunately, they finished up by saying that all was well, the baby looked fine and they could see no problems with the heart. They also told my brother and SIL the baby's sex, so I now know whether I'm going to be an aunt or an uncle (and no, I'm not going to tell you until the baby's here!).
I'm relieved because I love my brother and want him and his wife to be happy, and because you wouldn't wish those sort of problems on anybody anyway. But I'm also relieved because I would have felt quite irrationally guilty had there been any problem with the baby, because I was so jealous of this pregnancy. I never wished them any harm or wanted anything bad to happen, but I'm very conscious that I haven't been as pleased or excited for them as I should have been, and that at times I've really struggled with the whole situation.
Now that we've had this little worry, and I've had a chance to examine my feelings and acknowledge how uncharitable I've been, hopefully I can look forward to welcoming my latest little nephew or niece in January without these nasty little feelings of "it should be me, not them".